This battery insulation structure includes a double-walled insulating container 1 including an insulating container main body 2 in which an insulating space S1 is provided between an inner wall 21 and an outer wall 22, and an insulating lid 3 in which an insulating space S2 is provided between an inner lid 31 and an outer lid 32, and a battery body 4 housed in the insulating container 1, wherein the battery body 4 is arranged to be spaced apart from the inner wall 21 of the insulating container main body 2 and the inner lid 31 of the insulating lid 3. This battery insulation structure can be adapted to both a very low-temperature external environment and a very high-temperature external environment, and can reduce the influence of the temperature of the external environment on the batter as much as possible.

A battery pack includes battery cells arranged in a first direction, the battery cells each having a main surface, a first surface, and a second surface, main surfaces of battery cells that are adjacent to each other facing each other, and the first surface and the second surface respectively forming both ends of each of the battery cells in a second direction intersecting with the first direction; an insulating cap on the first surface and the second surface of the battery cell, the insulating cap extending from the first surface and the second surface onto a portion of the main surface of the battery cell and insulating the main surfaces of the battery cells adjacent to each other in the first direction; a bus bar on the insulating cap and electrically connecting the battery cells to each other; and a binding frame structurally binding the battery cells to each other.

A prismatic lithium ion battery cell includes a packaging having a cover. A power assembly disposed within the packaging has a first (e.g., negative) side and a second (e.g., positive) side. A terminal pad is electrically coupled to the first side, while the cover is electrically coupled to the second side, of the power assembly. The cover includes a spiral disk feature disposed below the terminal pad and a reversal disk disposed below the spiral disk feature. The reversal disk is configured to deflect upwards to displace the spiral disk feature to contact the terminal pad in response to a pressure within the packaging being greater than a first predefined pressure threshold, forming an external short-circuit between the first and second sides of the power assembly. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow within the power assembly.

A prismatic lithium ion battery cell includes a packaging having a cover. A power assembly disposed within the packaging has a first (e.g., negative) side and a second (e.g., positive) side. A terminal pad is electrically coupled to the first side, while the cover is electrically coupled to the second side, of the power assembly. The cover includes a spiral disk feature disposed below the terminal pad and a reversal disk disposed below the spiral disk feature. The reversal disk is configured to deflect upwards to displace the spiral disk feature to contact the terminal pad in response to a pressure within the packaging being greater than a first predefined pressure threshold, forming an external short-circuit between the first and second sides of the power assembly. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow within the power assembly.

The present disclosure relates to a secondary battery and a method of manufacturing the secondary battery. The secondary battery includes: a case; an electrode assembly, accommodated in the case and including a main body and a tab connected to the main body; a cap plate, coupled to the case; an electrode terminal, located on an outer side of the cap plate and including a first metal layer and a second metal layer disposed one on top of another; and a current collecting member, connected between the tab and the electrode terminal.

A battery cover 1 includes a side wall 2 covering a side surface S3 of a battery 100. The side wall 2 includes a first surface layer 11 in contact with the side surface S3 of the battery 100, a second surface layer 12 disposed on an opposite side of the side surface S3 of the battery 100 with respect to the first surface layer 11 in a thickness direction of the side wall 2, a heat insulating layer 13 disposed between the first surface layer 11 and the second surface layer 12 in the thickness direction, and a cushion layer 14 disposed between the first surface layer 11 and the heat insulating layer 13 in the thickness direction.

A battery cover 1 includes a side wall 2 covering a side surface S3 of a battery 100. The side wall 2 includes a first surface layer 11 in contact with the side surface S3 of the battery 100, a second surface layer 12 disposed on an opposite side of the side surface S3 of the battery 100 with respect to the first surface layer 11 in a thickness direction of the side wall 2, a heat insulating layer 13 disposed between the first surface layer 11 and the second surface layer 12 in the thickness direction, and a cushion layer 14 disposed between the first surface layer 11 and the heat insulating layer 13 in the thickness direction.

Provided are a top cover assembly of a cell, a cell, and a power battery. The top cover assembly includes an insulation cover plate, a metallic support plate, a terminal assembly, and an elastic seal. The metallic support plate and the insulation cover plate are stacked in a thickness direction. The terminal assembly passes through the insulation cover plate and the metallic support plate in the thickness direction to connect the insulation cover plate and the metallic support plate. The elastic seal surrounds a peripheral outside of the metallic support plate and the insulation cover plate. The elastic seal has a positioning flange provided on an inner peripheral surface thereof and is configured to be in a sealing fit with a housing of the cell. The positioning flange is sandwiched between the metallic support plate and the insulation cover plate.

A battery cell, a battery, an electrical device, and a method and equipment for manufacturing battery cells are provided. In some embodiments, the battery cell includes a casing, a pressure-relief mechanism and a protective part. The casing has a wall portion. The pressure-relief mechanism is provided on the wall portion. The pressure-relief mechanism includes a weak portion and a first portion and a second portion provided on two sides of the weak portion. The weak portion is used to connect the first portion and the second portion, and the pressure-relief mechanism is configured in such a way that the weak portion is broken to release pressure when the pressure in the casing reaches a threshold value. The protective part is arranged on the pressure-relief mechanism, and the protective part is used to connect the first portion and the second portion to increase strength of connection between the first portion and the second portion.

The disclosure relates to a technical field of batteries, and a battery and a battery apparatus are provided. The battery includes a cell, and the cell includes a cell body and tab portions. Each of the tab portions extends from one side of the cell body. The battery further includes a housing. The housing is a hollow structure, and the hollow structure is formed inside the housing. The cell is disposed in the housing, and the housing includes a first surface and a second surface opposite to each other. The first surface is provided with liquid injecting holes, and the liquid injecting holes penetrate the first surface and do not penetrate the second surface. An orthographic projection of the cell body on the first surface does not overlap the liquid injecting holes.